Bulb-stenciling device.



O. WINSTON. BULB STENCILING DEVICE. APPLICATION HLED 0m16.191s.

' Patented Mar. 5, 1918.

4 SHEETS-SHEET 2 A /Nvf/vro/Q @werfen Mbo-fon 5y /f/S Arme/frs o. wl-NSTON. BULB STENCILING DEVICE. APFLICATIQN FILED DE.C.1G, I9I6 4 SHEETS-SHEET 3.

O f WW@ VE /75'0 a d@ f f .Patented Mar. 5, 1918.

0. WINSTGN. BULB STENCIUNG DEVICE. A PPLICATION FILED DEC. 16. |916.

Patented Mar. 5

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OVERTON.VTINSTON, OF MINNEAPOLIS, MINNESOTA.

'BULB-STENCILING- DEVICE.

Specification of Letters Patent.

Patented. Mar. 5, 1918i.

Applcationled-Deeember'l, 1916. Seria1No;137,439-.

T0032 whom t 'may concern Be it known thatl, OVERTON VrNs'ron, a citizen of the United States, residingv at Minneapolis, in the countyof Hennepin and State ofMinnesota, have' invented? certain new and useful'v Improvements in Bulb;- Stenciling Devices; and I doherebydeclarethefol-lowing to'bea full, clear, and exactv description of the invention, suchy as will. enable others-skilled inthe art to which it appertains tor make and use the saine.

My'invention has for its objecttoprovide a bulb'stenc'iling? device'for use in applying wax'coating to the main hodyportionofv an electric light bulb to thereby prepare the samefor applicationlof frosted surfaces,

and is in the'nat'ureof'a modificationofor` improvement on the so-call'ed'stenciling' device disclosed'a-nd claiined in niy'prior application, S.' N'. 185,580, filed ofI date, Decernber 7th, 1916, andentitled Bulb'steiciling device. .f

Generally stated, the invention consists of the novel devices and combinations of devicesy hereinafter described and define-d in.

and'with some parts .brokenI away, showing' theY device in the sainev position as illustrated in Fig. 1;

Fig. 3 is a sectionV on the line of' Fig. 2;

Fig. L1 isa section on the line 1w-l. of

Fig. 2; Y

Fig. 5 is a view correspondingto Fig'. 2, but showing the bulb holding socket still closed `on the bulb shank, but moved to carry the bulb away from the stencil blocks;

Fig. 6 is a very much enlarged sectionV on line 6 6 of Fig. 7, showing means for anchoring the bulb ejecting spring to oneV of the jaws ofthe bulb'socket; A

Fig. 7'is a front elevation ofthe parts shown' in Fig. 6,V some' parts being. broken away;

Fig. 8 is aV fragmentary view of certain of the parts shown in Fig. 7 and' Fig.' 9 isa viewcorresponding to Fig. 5,

. ejector.

but showingltliei socket ofthe stenciling de-y vicefinovedto an extreme open position.

'lhezstenci'hng ldevice comprisesta suitable handle. 11 having` a curved stencil bar or.

extension 12. to which one ormorezstencil blocksare*v applied. As. shown,v there are two. of thesetf stencil .1. blocks 18.' and le, each of which is. fitted within and held by a flanged; metal rholderi `15- shown as .provided` with a threadedsteinslf.projectedsthrongh perforation inthe stencil bar 12 and clampedftheretwby a nut 17.. The stencil.

blocks.` 135 and z lll are formed .with concave.

faces so. that they'engagev the globe (vof. the a light bulb, only ati their'rnarginal edges.

These: stencil i blochs are advisably made of rubber: but may' be inafde ofy other slightly elastic ori` flexible: material. such, for example,. as' leather or.v compositionsof leather, rubber andthe like.

The Shankl I 0fthe iight bulb has the i customary diametrically projecting lochl lugs c; Asshown, the said bulb is'off the two-filament type', being provided with an.

axial filament al and a vertically oifset fila-f ment a2.

The shank ofl the light bulb isarranged:

to beclaniped in a divided secheti carriedl by a so-called clamping lever that' ispiv;v

oted to the handle..A Thisso-called clamping lever 18 has a hub 19, at one end that is located in a recess or bifurcation-20fof"the handleL 11, and is-'leosely'f pivoted thereto, on a pin'21y with freedom for' slight lateral and Vendwisewabbling"motion- The bulb socket*ismade'upuof'two'jawsfor -v members 22 and 23, the" former of'whieh'fisI formed integral with`v a projecting arnifofA the clamping lever 18." The jaw 23, at its rearend, has a hinge lng that'worhs-in a recess of' the-jaw 22 and is pivotally'con'-y nected thereto by a pin 24; T hesocket'jaws 22 and 23, at their outer ends, are approxiv mately semi-cylindrical,

against which the. lock lugs@ ofthe bulb andy they' are` formed` with internal Vstop shoulders 25 sochetare adapted to bef pressed by acoiled' f spring 26. rThis coiled spring 26, asxwill hereinafter be noted, serves'also as a bulb inner end ofthe shankof the bulb, yand its Its outer end presses againstY the'.

inner end is anchored to the base `ofthe Y. socket jaw 23,' preferably,rby nieans of an anchoring plate v27 detachably secured inv a recess of the said jaw 23 Vby a screw 28"4 (see particularly Figs. 6, 7` and 8). Byrefer;

ence particularly to Figs. 7 and 8, it will be noted that the extreme inner end of the spring 26 is bent inward at 2Ga to lit a lock notch 26b in the base of the said jaw 23. The bearing on the base of the jaw 23 against which the inner end of the spring 26 is anchored, is at an oblique angle to the axis of the closed socket (see particularly Figs. 2 and 5) and is at such angle thereto, that when the socket is completely open, as shown in Fig. 9, the axis of the spring will be midway between the two jaws 22 and 23, and hence, will exert a force on the proper line for ejecting the bulb.

The relatively movable bulb clamping jaw 23 works between laterally spaced cheek plates 27 and is provided with a cam pin 28 that projects at both ends, and at its ends, works in cam slots 29 of said plates. Approximately the front half portion of these cam slots 29 are concentric to the axis of the pivot 4, but the rear half is eccentric to said axis and operates as hereinafter described.

A leaf spring 30 fixed at one end to the lever 18 presses against the jaw 23 andl yieldingly forces the same toward the coperating jaw 22. A leaf spring 31 is anchored at one end to the shank of the handle 11 and yieldingly presses the free end of lever 18 outward, and hence, tends to move the two jaws 22 and 23 toward the stencil block 13.

Pivoted on the shank over the handle 11 is a spring pressed latch 32 that is engageable with lock notch 33 on the hub of the lever 18, when said lever and the jaws 22 and 23 are moved in the position shown in Fig. 5.

The numeral 34 indicates a peek hole in the bar 12.

peratz'on.

The operation of thev stenciling device, brieiy described, is substantially as follows:

The shank of the light bulb will be inserted into the socket while the socket jaws 22 and 23 are opened up, as shown in Fig. 9, and the said socket jaws will be closed on the bulb socket when the parts are moved from the position shown in Fig. 9 into the position shown in Fig. 5. This closing movement of the socket jaws is produced by the cam action of the eccentric portions of the cam slots 29 acting on the ends of the cam pin 2S. Vhen the parts are moved from the position shown in Fig. 5 to the position shown in Figs. 1 and 2, the light bulb will be firmly held by the socket and its globe will be moved into tight contact with the stencil blocks 13 and 14. The light bulb may be rotated on itsaxis so as to set the filaments a1 and a2 in proper position, in

respect to the frosted surfaces which are- 'to be produced in the zones covered by the stencil blocks. The operator, looking through peek hole 34, can accurately determine when the filaments are properly positioned.

`When the light bulb is held in position, as above described, it may be dipped int-o hot parafhn, or other wax, thereby covering the entire surface of the globe, except those places or zones that are covered by the socalled stencil blocks 13 and 14.

To remove the bulb from the socket, it is only necessary to press the lever 18 and thereby move the same and the socket into the position shown in Fig. 9. ln this position, the socket is opened up and the spring 26 will then automatically eject the bulb. Under the movement of the lever 18 from the position shown in Figs. l and 2, into the position shownin Fig. 5, the socket jaws remain closed upon the shank of the light bulbvand the latch 32 will hold the said parts against return movements.

Obviously, it is the movement of the parts from the position shown in Fig. 5 into the position shown in Fig. 9, that moves the cam pin 28 in eccentric portions of the cam slots 29 and causes the opening of the bulb holding socket. f

After the wax has been applied to the globe of the bulb, as described, it maybe dipped in an acid which will have a chemical action on the glass and which will pro'- duce the frosted effect on the surfaces or zones not covered by the wax, and thereafter, the wax can be removed by dipping the bulb in boiling water.

Vhat I claim is: A

1. A stenciling device comprising a handle having an extension provided with a' stencil block, a lever pivoted to said handle, Y

a two-part bulb socket connected to saidy lever, and means for opening and closing.

stencil block, a lever pivoted to said handle,

a two-part bulb socket member connected to said lever, and means for opening and clos-V ing said socket, by movements of said lever, said socket member having internal shoulders engageable with the lock lugs of a bulb shank to hold the same with freedom for'l lrotary adjustments, the extension bar of said handle having a peek hole for determining the proper rotary adjustment of the bulb.

4. A stenciling device comprising a handle having an extension providedr with a stencil block, a lever pivoted to said handle, a. two-part bulb socket member connected to said lever', means for openingY and closing saidsocket by'movements of said lever, and an ejector spring within said socket serving to automatically eject the bulb from the open socket.

5. Ina stenciling device, the combination with I a` handle having 'an extension provided with a stencil block, a lever pivoted to said handle, a` light'bulb socket comprising two members, one rigidly secured to said lever and. the other pivoted thereto, a cam secured to said handle, and a cam projection on the movable socket member engageable with said cam and cooperating therewith to close the socket under outward movement of saidlever, and to open said socket under inward movement of said lever.

6. In a stenciling device, the combination with a handle having an extension provided with a stencil block, a lever pivoted to said handle, a light bulb socket comprising two members, one rigidly secured to said lever and the other pivoted thereto, a cam secured to said handle, and a cam projection on the movable socket member engageable with said cam and coperating therewith to close the socket under outward movement of said lever, and to open said socket under inward movement of said lever, the inner portion of said cam being concentric to the pivotal connection between said lever and handle, and the outer portion thereof being eccentric thereto.

7. In a stenciling device, the combination with a handle having an extension provided with a stencil block, a lever pivoted to said handle, a light bulb socket comprising two members, one rigidly secured to said. lever and the other pivoted thereto, a cam se cured to said handle, a cam projection on the movable socket member engageable with said cam and coperating therewith to close the socket under outward movement of said lever, and to open said socket under inward movement of said lever, the inner portion of said cam being concentric to the pivotal connection between said Alever and handle, the outer portion thereof,

being eccentric thereto, a spring yieldingly pressing said lever outward, and a latch for securing said lever in an intermediate position with the socket moved outward but still closed.

8. In a stenciling device, the combination with a handle having an extension provided with a stencil block, a lever pivoted to said handle, a light bulb socket comprising two members, one rigidly secured to said lever and the other pivoted thereto, ay cam secured to said handle, a cam projection on the movable socket member engageable with said cam and cooperating therewith to close the socket under outward movement of said lever, and to open said socket under inward movement of said lever, the inner portion of said cam being concentric to -the-pivotal conq iiection between said lever and handle, andE the cuter portion Vthereof being eccentric thereto, a spring yieldingly pressing fsaidle# ver outward, a latch for securing saidlever in intermediate position with the socket" moved out-ward but still closed, and a spring carried by'said lever and yieldingly'pressing the movable socket membertoward its' closed position. Y Y

9. In*astencilinggdevice, the combination;v witha handle having/an extension provided with a` stenciliblock, alever pivotedv tots'aid' handle, a light bulb socket comprisingtwo members, one rigidly secured tosaid lever and the other pivoted thereto, a cam secured to said handle, a cam projection onV the mov#l able socket member engageable with said cam and cooperating therewith to close the socket under outward movement of said lever, and to open said Socket under inward movement of said lever and a coiled spring within said socket anchoredy to one of the socket members and tending to eject the bulb from said socket.

10. 1n a stenciling device, the combination with a handle having an extension provided with a stencil block, a lever pivoted to said handle, a light bulb socket comprising two members, one rigidly secured to said lever and the other pivoted thereto, a cam secured to said handle, a cam projection on the movable socket member engageable with said cam and coperating therewith to yclose the socket under outward movement of said lever, and to open said socket under inward movement of said lever, a coiled spring within said socket anchored to one of the socket members and tending to eject the bulb from said socket, a spring reacting against said handle and lever and tending to force the latter away from the former, and a spring reacting against said lever and movable socket member. l

l1. A stenciling device comprising a handle having an extension provided with a stencil block, a lever pivoted to said handle, atwo-part bulb socket connected to said lever, means for opening and closing said socket by movements of said lever, a spring tending to move the lever away from said handle, and a latch for holding said lever against movement under force of said sprino'.

l2. In a stenciling device, a combination with a handle having an extension bar provided with a stencil block and formed with laterally spaced cheek plates having cam grooves therein, of a spring pressed lever pivoted to said handle, and a bulb socket comprising two aw members, one fixed to said lever andthe other pivoted thereto, the said pivoted member having cam projections engaging said cam grooves of said cheek plates, substantially as described.

13. In a stenciling device, the combination with a handle having an extension bar dleV having an extension, a stencil block holder detachably secured to said extension, a stencil block detachably and replaceably held in said holder, a lever pivoted to said handle, and a light bulb socket carried by 20 said lever and adapted to hold a light bulb with its globe positioned against said stencil block.

In testimony whereof I aflix my signa-turey in presence of ltvvo Witnesses.

'I OVERTON WINSTON.

Vsitnesses CLARA DEMAREST, BERNICE G. VHEELER.

Copies of this patent may be obtained for ve cents each, by addressingthe Commissioner of Patents,

Washington, D. C." 

